Polyamide-imide based filaments, and a process for obtaining them

摘要

The present invention relates to heat-resistant threads, filaments and fibres based on polyamide-imide. They have a polydispersion index I/=45 cN/tex, a Young's modulus>/=3.8 GPa, an elongation25%, the degree of whiteness DW<30 and the yellow index YI>170. In addition they have a very good stability to light, quantified by the retention of the mechanical characteristics. They have wide application in working and protective garments.